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1 /* |
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2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 */ |
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15 |
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16 // System includes |
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17 #include <e32base.h> |
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18 #include <e32const.h> |
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19 #include <coecntrl.h> |
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20 #include <coemain.h> |
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21 #include <aknphysics.h> |
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22 |
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23 // User includes |
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24 #include "xncontroladapter.h" |
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25 #include "xnuiengine.h" |
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26 #include "xnnode.h" |
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27 #include "xnnodepluginif.h" |
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28 #include "xnproperty.h" |
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29 |
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30 #include "xnscrollablecontroladapter.h" |
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31 |
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32 // Constants |
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33 const TInt KOffset( 25 ); |
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34 |
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35 _LIT8(KViewportHeight, "viewport-height"); |
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36 _LIT8(KViewportWidth, "viewport-width"); |
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37 _LIT8(KViewportTop, "viewport-top"); |
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38 _LIT8(KViewportLeft, "viewport-left"); |
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39 _LIT8(KScrollDirection, "scroll-direction"); |
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40 _LIT8(KHorizontal, "horizontal"); |
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41 |
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42 const TInt EVertical( 0 ); |
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43 const TInt EHorizontal( 1 ); |
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44 |
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45 // ============================ MEMBER FUNCTIONS =============================== |
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46 |
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47 // ----------------------------------------------------------------------------- |
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48 // CXnScrollableControlAdapter::NewL |
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49 // Two-phased constructor. Can leave. |
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50 // ----------------------------------------------------------------------------- |
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51 // |
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52 CXnScrollableControlAdapter* CXnScrollableControlAdapter::NewL( |
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53 CXnNodePluginIf& aNode ) |
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54 { |
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55 CXnScrollableControlAdapter* self = |
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56 new ( ELeave ) CXnScrollableControlAdapter( aNode ); |
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57 |
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58 CleanupStack::PushL( self ); |
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59 self->ConstructL(); |
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60 CleanupStack::Pop( self ); |
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61 return self; |
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62 } |
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63 |
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64 // ----------------------------------------------------------------------------- |
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65 // CXnScrollableControlAdapter::~CXnScrollableControlAdapter |
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66 // Destructor. |
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67 // ----------------------------------------------------------------------------- |
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68 // |
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69 CXnScrollableControlAdapter::~CXnScrollableControlAdapter() |
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70 { |
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71 delete iPhysics; |
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72 } |
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73 |
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74 // ----------------------------------------------------------------------------- |
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75 // CXnScrollableControlAdapter::CXnScrollableControlAdapter |
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76 // C++ default constructor. Must not leave. |
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77 // ----------------------------------------------------------------------------- |
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78 // |
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79 CXnScrollableControlAdapter::CXnScrollableControlAdapter( CXnNodePluginIf& aNode ) |
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80 : iNode( aNode ), iStartPosition( 0, 0), iPreviousPosition( 0, 0 ), |
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81 iCurrentPosition( 0, 0 ), iLayoutChanged( EFalse ) |
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82 { |
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83 } |
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84 |
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85 // ----------------------------------------------------------------------------- |
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86 // CXnScrollableControlAdapter::ConstructL |
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87 // 2nd phase constructor. Can leave. |
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88 // ----------------------------------------------------------------------------- |
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89 // |
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90 void CXnScrollableControlAdapter::ConstructL() |
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91 { |
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92 CXnControlAdapter::ConstructL( iNode ); |
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93 SetControlContext( this ); |
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94 SetHitTest( this ); |
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95 iUiEngine = iNode.Node().UiEngine(); |
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96 |
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97 iNode.Node().SetScrollableControl( this ); |
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98 |
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99 // Default |
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100 iDirection = EVertical; |
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101 |
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102 CXnProperty* prop( iNode.GetPropertyL( KScrollDirection ) ); |
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103 |
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104 if ( prop && prop->StringValue() == KHorizontal ) |
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105 { |
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106 iDirection = EHorizontal; |
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107 } |
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108 } |
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109 |
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110 // ----------------------------------------------------------------------------- |
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111 // CXnScrollableControlAdapter::HandlePointerEventL |
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112 // |
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113 // ----------------------------------------------------------------------------- |
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114 // |
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115 void CXnScrollableControlAdapter::HandlePointerEventL( |
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116 const TPointerEvent& aPointerEvent ) |
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117 { |
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118 if( !iPhysics ) |
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119 { |
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120 return; |
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121 } |
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122 |
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123 TPoint stylusPos( aPointerEvent.iPosition ); |
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124 |
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125 switch( aPointerEvent.iType ) |
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126 { |
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127 case TPointerEvent::EButton1Down: |
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128 { |
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129 iPhysics->StopPhysics(); |
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130 iPhysics->ResetFriction(); |
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131 iStartPosition = stylusPos; |
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132 iStartTime.HomeTime(); |
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133 iPreviousPosition = iCurrentPosition; |
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134 iStylusPosition = stylusPos; |
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135 } |
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136 break; |
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137 case TPointerEvent::EButton1Up: |
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138 { |
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139 TInt distanceY( iStartPosition.iY - stylusPos.iY ); |
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140 TInt distanceX( iStartPosition.iX - stylusPos.iX ); |
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141 |
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142 TPoint drag( distanceX, distanceY ); |
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143 iPhysics->StartPhysics( drag, iStartTime ); |
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144 } |
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145 break; |
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146 case TPointerEvent::EDrag: |
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147 { |
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148 TPoint distanceFromStart( iStartPosition - stylusPos ); |
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149 |
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150 if( ( Abs( distanceFromStart.iY ) > KOffset && iDirection == EVertical ) || |
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151 ( Abs( distanceFromStart.iX ) > KOffset && iDirection == EHorizontal ) ) |
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152 { |
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153 CXnNode* focused( iUiEngine->FocusedNode() ); |
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154 |
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155 if ( focused ) |
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156 { |
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157 // Remove pressed down |
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158 focused->UnsetStateL( |
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159 XnPropertyNames::style::common::KPressedDown ); |
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160 focused->HideTooltipsL(); |
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161 } |
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162 } |
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163 |
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164 TInt deltaY( iStylusPosition.iY - stylusPos.iY ); |
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165 TInt deltaX( iStylusPosition.iX - stylusPos.iX ); |
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166 |
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167 iStylusPosition = stylusPos; |
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168 |
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169 TPoint deltaPoint( deltaX, deltaY ); |
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170 |
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171 iPhysics->RegisterPanningPosition( deltaPoint ); |
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172 } |
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173 break; |
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174 default: |
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175 break; |
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176 } |
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177 |
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178 CXnControlAdapter::HandlePointerEventL( aPointerEvent ); |
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179 } |
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180 |
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181 // ----------------------------------------------------------------------------- |
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182 // CXnScrollableControlAdapter::Draw |
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183 // |
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184 // ----------------------------------------------------------------------------- |
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185 // |
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186 void CXnScrollableControlAdapter::Draw( const TRect& aRect ) const |
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187 { |
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188 CXnControlAdapter::Draw( aRect ); |
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189 } |
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190 |
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191 // ----------------------------------------------------------------------------- |
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192 // CXnScrollableControlAdapter::SizeChanged |
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193 // |
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194 // ----------------------------------------------------------------------------- |
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195 void CXnScrollableControlAdapter::SizeChanged() |
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196 { |
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197 TRAP_IGNORE( |
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198 ReadPropertiesL(); |
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199 InitPhysicEngineL(); ); |
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200 |
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201 CXnControlAdapter::SizeChanged(); |
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202 } |
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203 |
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204 // ----------------------------------------------------------------------------- |
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205 // CXnScrollableControlAdapter::MakeVisible |
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206 // |
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207 // ----------------------------------------------------------------------------- |
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208 // |
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209 void CXnScrollableControlAdapter::MakeVisible( TBool aVisible ) |
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210 { |
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211 TBool visible( IsVisible() ? ETrue : EFalse ); |
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212 |
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213 if ( visible == aVisible ) |
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214 { |
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215 return; |
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216 } |
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217 |
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218 if( aVisible ) |
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219 { |
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220 TRAP_IGNORE( InitPhysicEngineL() ); |
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221 } |
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222 |
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223 CCoeControl::MakeVisible( aVisible ); |
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224 } |
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225 |
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226 // ----------------------------------------------------------------------------- |
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227 // CXnScrollableControlAdapter::HitRegionContains |
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228 // |
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229 // ----------------------------------------------------------------------------- |
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230 // |
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231 TBool CXnScrollableControlAdapter::HitRegionContains( const TPoint& aPoint, |
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232 const CCoeControl& /*aControl*/) const |
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233 { |
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234 return iViewPort.Contains( aPoint ); |
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235 } |
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236 |
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237 // ----------------------------------------------------------------------------- |
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238 // CXnScrollableControlAdapter::HandleScreenDeviceChangedL |
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239 // |
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240 // ----------------------------------------------------------------------------- |
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241 void CXnScrollableControlAdapter::HandleScreenDeviceChangedL() |
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242 { |
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243 // The new layout has not been calculated yet. |
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244 // Therefore we need to read new propertues and initialise engine when LayoutChagedL() is called next time. |
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245 iLayoutChanged = ETrue; |
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246 CXnControlAdapter::HandleScreenDeviceChangedL(); |
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247 } |
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248 |
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249 // ----------------------------------------------------------------------------- |
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250 // CXnScrollableControlAdapter::DeltaPosition |
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251 // |
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252 // ----------------------------------------------------------------------------- |
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253 const TPoint CXnScrollableControlAdapter::DeltaPosition() const |
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254 { |
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255 return iStartViewPosition - iCurrentPosition; |
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256 } |
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257 |
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258 // ----------------------------------------------------------------------------- |
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259 // CXnScrollableControlAdapter::ResetState |
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260 // |
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261 // ----------------------------------------------------------------------------- |
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262 void CXnScrollableControlAdapter::ResetState() |
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263 { |
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264 iStartViewPosition = TPoint( 0, 0 ); |
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265 iCurrentPosition = TPoint( 0, 0 ); |
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266 iPreviousPosition = TPoint( 0, 0 ); |
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267 } |
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268 |
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269 // ----------------------------------------------------------------------------- |
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270 // CXnScrollableControlAdapter::ShowItem |
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271 // |
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272 // ----------------------------------------------------------------------------- |
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273 void CXnScrollableControlAdapter::ShowItem( CXnNode& aNode ) |
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274 { |
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275 TRect rect( aNode.MarginRect() ); |
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276 |
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277 if( !iViewPort.Contains( rect.iTl ) || !iViewPort.Contains( rect.iBr ) ) |
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278 { |
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279 if ( iDirection == EVertical ) |
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280 { |
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281 TInt delta( 0 ); |
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282 |
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283 if( rect.iTl.iY < iViewPort.iTl.iY ) |
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284 { |
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285 delta = rect.iTl.iY - iViewPort.iTl.iY; |
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286 } |
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287 else if( rect.iBr.iY > iViewPort.iBr.iY ) |
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288 { |
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289 delta = rect.iBr.iY - iViewPort.iBr.iY; |
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290 } |
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291 |
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292 TPoint newPosition( iPreviousPosition + TPoint( 0, delta ) ); |
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293 |
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294 ViewPositionChanged( newPosition, ETrue, 0 ); |
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295 } |
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296 else |
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297 { |
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298 TInt delta( 0 ); |
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299 |
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300 if( rect.iTl.iX < iViewPort.iTl.iX ) |
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301 { |
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302 delta = rect.iTl.iX - iViewPort.iTl.iX; |
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303 } |
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304 else if( rect.iBr.iX > iViewPort.iBr.iX ) |
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305 { |
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306 delta = rect.iBr.iX - iViewPort.iBr.iX; |
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307 } |
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308 |
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309 TPoint newPosition( iPreviousPosition + TPoint( delta, 0 ) ); |
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310 |
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311 ViewPositionChanged( newPosition, ETrue, 0 ); |
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312 } |
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313 } |
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314 } |
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315 |
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316 // ----------------------------------------------------------------------------- |
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317 // CXnScrollableControlAdapter::LayoutChangedL |
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318 // |
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319 // ----------------------------------------------------------------------------- |
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320 void CXnScrollableControlAdapter::LayoutChangedL() |
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321 { |
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322 if( iLayoutChanged ) |
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323 { |
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324 iLayoutChanged = EFalse; |
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325 ReadPropertiesL(); |
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326 InitPhysicEngineL(); |
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327 } |
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328 } |
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329 |
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330 // --------------------------------------------------------------------------- |
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331 // CXnScrollableControlAdapter::ViewPositionChanged |
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332 // --------------------------------------------------------------------------- |
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333 // |
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334 void CXnScrollableControlAdapter::ViewPositionChanged( |
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335 const TPoint& aNewPosition, TBool aDrawNow, TUint /*aFlags*/ ) |
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336 { |
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337 TPoint diff; |
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338 |
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339 if ( iDirection == EVertical ) |
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340 { |
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341 diff = TPoint( 0, aNewPosition.iY - iPreviousPosition.iY ); |
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342 } |
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343 else |
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344 { |
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345 diff = TPoint( aNewPosition.iX - iPreviousPosition.iX, 0 ); |
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346 } |
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347 |
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348 iPreviousPosition = aNewPosition; |
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349 iCurrentPosition += diff; |
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350 TPoint tmpPos = iNode.Control()->Position(); |
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351 tmpPos -= diff; |
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352 iNode.Control()->SetPosition( tmpPos ); |
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353 if( aDrawNow ) |
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354 { |
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355 DrawNow( iViewPort ); |
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356 } |
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357 } |
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358 |
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359 // --------------------------------------------------------------------------- |
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360 // CXnScrollableControlAdapter::PhysicEmulationEnded |
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361 // --------------------------------------------------------------------------- |
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362 // |
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363 void CXnScrollableControlAdapter::PhysicEmulationEnded() |
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364 { |
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365 } |
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366 |
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367 // --------------------------------------------------------------------------- |
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368 // CXnScrollableControlAdapter::ViewPosition |
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369 // --------------------------------------------------------------------------- |
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370 // |
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371 TPoint CXnScrollableControlAdapter::ViewPosition() const |
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372 { |
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373 return iCurrentPosition; |
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374 } |
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375 |
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376 // --------------------------------------------------------------------------- |
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377 // CXnScrollableControlAdapter::ResetContext |
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378 // --------------------------------------------------------------------------- |
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379 // |
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380 void CXnScrollableControlAdapter::ResetContext( CWindowGc& aGc ) const |
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381 { |
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382 aGc.Reset(); |
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383 aGc.SetClippingRect( iViewPort ); |
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384 } |
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385 |
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386 // --------------------------------------------------------------------------- |
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387 // CXnScrollableControlAdapter::InitPhysicEngineL |
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388 // --------------------------------------------------------------------------- |
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389 // |
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390 void CXnScrollableControlAdapter::InitPhysicEngineL() |
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391 { |
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392 // Init physic engine |
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393 if ( !iPhysics && CAknPhysics::FeatureEnabled() ) |
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394 { |
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395 iPhysics = CAknPhysics::NewL( *this, this ); |
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396 } |
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397 if( !iPhysics ) |
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398 { |
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399 return; |
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400 } |
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401 TSize viewPortSize = iViewPort.Size(); |
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402 TSize totalSize( iNode.Rect().Size() ); |
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403 |
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404 if ( iDirection == EVertical ) |
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405 { |
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406 iPhysics->InitPhysicsL( totalSize, viewPortSize, EFalse ); |
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407 } |
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408 else |
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409 { |
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410 iPhysics->InitPhysicsL( totalSize, viewPortSize, ETrue ); |
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411 } |
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412 |
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413 |
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414 iCurrentPosition = |
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415 TPoint( viewPortSize.iWidth / 2, viewPortSize.iHeight / 2 ); |
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416 |
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417 iPreviousPosition = iStartViewPosition = iCurrentPosition; |
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418 } |
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419 |
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420 // --------------------------------------------------------------------------- |
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421 // CXnScrollableControlAdapter::ReadPropertiesL |
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422 // --------------------------------------------------------------------------- |
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423 // |
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424 void CXnScrollableControlAdapter::ReadPropertiesL() |
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425 { |
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426 TInt width( 0 ); |
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427 TInt height( 0 ); |
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428 TInt top( 0 ); |
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429 TInt left( 0 ); |
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430 |
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431 CXnNode& node( iNode.Node() ); |
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432 |
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433 // Width |
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434 CXnProperty* prop = iNode.GetPropertyL( KViewportWidth ); |
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435 if( prop ) |
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436 { |
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437 width = iUiEngine->HorizontalPixelValueL( |
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438 prop, iNode.Rect().Width() ); |
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439 } |
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440 if( width == 0 ) |
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441 { |
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442 width = node.Parent()->Rect().Width(); |
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443 } |
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444 |
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445 // Height |
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446 prop = iNode.GetPropertyL( KViewportHeight ); |
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447 if( prop ) |
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448 { |
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449 height = iUiEngine->VerticalPixelValueL( |
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450 prop, iNode.Rect().Height() ); |
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451 } |
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452 if( height == 0 ) |
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453 { |
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454 height = node.Parent()->Rect().Height(); |
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455 } |
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456 |
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457 // Top |
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458 prop = iNode.GetPropertyL( KViewportTop ); |
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459 if( prop ) |
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460 { |
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461 top = iUiEngine->VerticalPixelValueL( |
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462 prop, iNode.Rect().Height() ); |
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463 } |
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464 |
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465 // Left |
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466 prop = iNode.GetPropertyL( KViewportLeft ); |
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467 if( prop ) |
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468 { |
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469 left = iUiEngine->HorizontalPixelValueL( |
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470 prop, iNode.Rect().Width() ); |
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471 } |
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472 |
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473 iViewPort = TRect( iNode.Rect().iTl, TSize( width, height ) ); |
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474 iViewPort.Move( left, top ); |
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475 } |
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476 |
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477 // End of File |